CN100383402C - Blast fan impeller harving blade radical length increasing air from side edge to bottom edge - Google Patents
Blast fan impeller harving blade radical length increasing air from side edge to bottom edge Download PDFInfo
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- CN100383402C CN100383402C CNB2004100697962A CN200410069796A CN100383402C CN 100383402 C CN100383402 C CN 100383402C CN B2004100697962 A CNB2004100697962 A CN B2004100697962A CN 200410069796 A CN200410069796 A CN 200410069796A CN 100383402 C CN100383402 C CN 100383402C
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- air blast
- air
- lateral margin
- blower fan
- edge
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Abstract
The present invention relates to a blade wheel with the radial lengths of fan blades extending from air inlet side edge to bottom edge. The present invention provides a heat radiation fan component which can enlarge air inflow, can increase air outlet air pressure, and can reduce blasting noise. The present invention comprises a hub provided with a peripheral surface, at least one support member connected with the peripheral surface of the hub, and a plurality of fan blades which are connected with the hub and are supported on the hub by the support member, wherein holding space is formed in the hub, and the fan blade comprises an air inlet side edge, a bottom edge, a radial inner edge and a radial outer edge which are corresponding to the hub. The radial lengths of the radial inner edges of at least partial fan blades of the fan blades change axially to cause the change of radial lengths of fan blades extending from the air inlet side edge to the bottom edge, which leads the radial length of the air inlet side edge of the fan blade is less than that of the bottom edge.
Description
Technical field
The invention belongs to the radiation fan parts, particularly a kind of blower fan blade radical length is by the impeller of inlet air lateral margin to the root edge amplification.
Background technique
As shown in Figure 1 and Figure 2, existing air blast heat-dissipating fan comprises shell block 1 ', cover plate 2 ' and impeller 3.
Shell block 1 ' is provided with room 11 ' and side air-out mouth 12 '.
Cover plate 2 ' is incorporated on the shell block 1 ', and is provided with wind inlet 21 '.
Airblast blade 33 utilizes supporting element 32 to be connected in wheel hub 31.
As shown in Figure 2, connecting ring 34 also can be selected to be provided with in the top of airblast blade 33, with strengthening structure intensity.
In the running, the air blast flabellum 33 of impeller 3 rotates, and then sucks axial flow by the wind inlet 21 of cover plate 2; Then, air blast flabellum 33 driving axial air-flows are radially exported via the side air-out mouth 12 ' of shell block 1 ', and so, the air blast heat-dissipating fan gets final product the desire heat radiation object outside the offside exhaust outlet 12 ', dispels the heat as radiating fin.
Though above-mentioned air blast heat-dissipating fan is widely used in the computer system, yet still there is following other problems in the air blast heat-dissipating fan on reality is used, for example:
1, the inlet air lateral margin 33a of air blast flabellum 33 roughly has identical axial height with wheel hub 31 end faces usually, and locates at the wind inlet 21 ' that the end face of finishing when assembling wheel hub 31 is roughly pressed close to cover plate 2 '.Therefore, in fact, wind inlet 21 ' only can be formed the air inlet scope by the gap between the air blast flabellum 33, thereby, the air inflow of limitation axial flow.At this moment, if the inlet air lateral margin 33a of air blast flabellum 33 forms big radial length, then will cause inlet air lateral margin 33a to disturb, hinder the air inlet action of wind inlet 21 ' axial flow, thereby be unfavorable for promoting air inflow, and then influence air output and blast.
2, on the other hand, if air blast flabellum 33 forms big radial length at inlet air example edge 33a, then the axial flow that sucks via wind inlet 21 ' will be subjected to the rotation guiding of inlet air lateral margin 33a at once and change into radially centrifugal flow immediately after carrying out shell block 1 '.The phenomenon that this kind air-flow turns to immediately may cause producing the air blast noise, and influences the rotating speed efficient of air blast heat-dissipating fan.Based on above-mentioned factor, still be necessary the further structure of the existing air blast impeller of heat radiating fan of improvement really.
Summary of the invention
The purpose of this invention is to provide a kind of air inflow that increases, increase the air-out blast, reduce the blower fan blade radical length of air blast noise by the impeller of inlet air lateral margin to the root edge amplification.
The present invention comprises wheel hub, at least one supporting element that is connected in the wheel hub outer circumferential face with outer circumferential face and several pieces air blast flabellums that connect and be supported in wheel hub by supporting element; The inner containing space that forms of wheel hub; The air blast flabellum is incorporated into wind lateral margin, root edge, corresponding to the radially inner edge and the radially outer edge of wheel hub; Radially inner edge radial length to small part blower fan leaf in several pieces air blast flabellums is axially changing to form the blower fan blade radical length by the variation of inlet air lateral margin to the root edge amplification, make radial length to the inlet air lateral margin of small part blower fan leaf less than the root edge radial length, and the radial length of inlet air lateral margin less than the root edge radial length to forming radially inner edge that interleaved arranges at the air blast flabellum that axially forms same radial length so that the suitable quantity ratio is corresponding between the small part blower fan leaf.
Wherein:
Inner edge forms axioversion, arc song or stepped to form the blower fan blade radical length by the variation of inlet air lateral margin to the root edge amplification to radial length axially changing radially.
The axial height of air blast flabellum is higher than wheel hub, to form buffer space between the end face of the radially inner edge of air blast flabellum and wheel hub.
Supporting element is for connecting several ribs of supporting part air blast flabellum; Several pieces air blast flabellums are connected with so as to connecting the connecting ring of several pieces blower fan leaves.
Connecting ring is connected in the inlet air lateral margin of several pieces air blast flabellums.
Connecting ring is connected in the root edge of several pieces air blast flabellums.
Supporting element is a ring flat-plate.
Because the present invention comprises wheel hub, at least one supporting element that is connected in the wheel hub outer circumferential face with outer circumferential face and several pieces air blast flabellums that connect and be supported in wheel hub by supporting element; The inner containing space that forms of wheel hub; The air blast flabellum is incorporated into wind lateral margin, root edge, corresponding to the radially inner edge and the radially outer edge of wheel hub; Axially changing to form the blower fan blade radical length by the variation of inlet air lateral margin to the root edge amplification to the radially inner edge radial length of small part blower fan leaf in several pieces air blast flabellums, the radial length of inlet air lateral margin that makes the air blast flabellum is less than the root edge radial length.When assembling air blast heat-dissipating fan of the present invention turns round, the air blast flabellum will rotate and drive outside axial flow and entered by the wind inlet of air blast heat-dissipating fan, at this moment, because the radial length of the inlet air lateral margin of air blast flabellum is less than the root edge radial length, whereby, and then help the air inlet area being expanded to maximum and helping making air-flow to flow toward the Lower Half of air blast flabellum, so that avoid the first half of the go to action concentrations of axial flow at the air blast flabellum, and then the air blast noise of minimizing air blast flabellum; Then, axial flow is exported by the supercharging of side air-out mouth in the radial air flow mode via the driving of air blast flabellum after smoothness turns to again.Not only increase air inflow, increase the air-out blast, and reduce the air blast noise, thereby reach purpose of the present invention.
Description of drawings
Fig. 1, existing air blast heat-dissipating fan decomposition texture schematic isometric.
Fig. 2, existing air blast heat-dissipating fan decomposition texture schematic isometric (top of airblast blade is provided with connecting ring).
Fig. 3, be the embodiment of the invention one broken section structural representation stereogram.
Fig. 4, for the assembling embodiment of the invention one air blast heat-dissipating fan structural representation sectional view.
Fig. 5, for the assembling embodiment of the invention one air blast heat-dissipating fan user mode schematic representation.
Fig. 6, be the embodiment of the invention one structural representation sectional view (radially inner edge axially form stepped).
Fig. 7, be the embodiment of the invention two broken section structural representation stereograms.
Fig. 8, be the embodiment of the invention two structural representation stereograms.
Fig. 9, be the embodiment of the invention three structural representation stereograms.
Figure 10, be the embodiment of the invention three structural representation sectional views.
Embodiment
Embodiment one
As shown in Figure 3, Figure 4, blower fan blade radical length of the present invention comprises wheel hub 41, at least one supporting element 42, several pieces air blast flabellums 43 and at least one connecting ring 44,45 with outer circumferential face by the inlet air lateral margin to the impeller 4 of root edge amplification.
Blower fan blade radical length of the present invention can be in conjunction with motor (figure does not show) to the impeller 4 of root edge amplification by the inlet air lateral margin, and forms complete air blast heat-dissipating fan with shell block 1 and cover plate 2.
Shell block 1 is provided with room 11 and side air-out mouth 12.
Supporting element 42 is the wavy rib by the outer circumferential face outward radial extension of wheel hub 41.
The part air blast flabellum 43 of several pieces air blast flabellums 43 is connected with supporting element 42 one.Interconnect by at least one connecting ring 44,45 between several pieces air blast flabellums 43 so that supporting element 42 directly, indirectly with all air blast flabellum 43 support and connection in wheel hub 41.
As shown in Figure 3, Figure 4, air blast flabellum 43 comprises several lateral margins, as corresponding to the root edge 43b of the inner bottom surface of the inlet air lateral margin 43a of cover plate 2 wind inlets 21, contiguous shell block 1 room 11, corresponding to the radially inner edge and the radially outer edge 43d of wheel hub 41.
Radially inner edge is axially forming different slope or curvature, its by the inlet air side radially inner edge 43c1, air side radially inner edge 43c2 constitute, thereby make air blast flabellum 43 by inlet air lateral margin 43a to root edge 43b amplification radial length.That is the radial length of the inlet air lateral margin 43a of air blast flabellum 43 has less than the radial length of root edge 43b relatively than short radial length, to reduce the air inlet action of disturbing wind inlet 21.Moreover the radially outer edge 43d of air blast flabellum 43 all is parallel to the rotational axis line of air blast flabellum 43, and is axially forming same radial length.In addition, the preferable wheel hub 41 that is higher than of the axial height of air blast flabellum 43 so, radially can form buffer space 400 between the end face of inner edge 43c1 and wheel hub 41 in the inlet air side of air blast flabellum 43, with relative increase air inlet area, and lifting air flow divert fluency.
The inlet air side of at least a portion air blast flabellum 43 radially inner edge 43c1, air side radially inner edge 43c2 connect supporting element 42 in order to one.
As shown in Figure 5, when the running of assembling air blast heat-dissipating fan of the present invention, air blast flabellum 43 will rotate the axial flow that drives the outside and enter buffer space 400 by the wind inlet 21 of cover plate 2.At this moment and since the inlet air side radially inner edge 43c1 form axioversion or arc song, thereby the inlet air lateral margin 43a of air blast flabellum 43 has than minor axis to length.Whereby, the present invention can enlarge the buffer space 400 of inlet air side relatively, and then helps the air inlet area is expanded to maximum.Then, after axial flow enters buffer space 400,, therefore, can make axial flow after smoothness turns to, export by 12 superchargings of side air-out mouth in the radial air flow mode via the driving of air blast flabellum 43 again because buffer space 400 has enough volumes.At this moment, air blast flabellum 43 utilizes the inlet air side, and radially radially the inclination of inner edge 43c2 or the Lower Half of arc Qu Zaocheng air blast flabellum 43 have relatively large wind dispelling ability inner edge 43c1, air side, therefore, help making air-flow to flow toward the Lower Half of air blast flabellum 43, so that avoid the first half of the go to action concentrations of axial flow at air blast flabellum 43, and then the air blast noise of minimizing air blast flabellum 43.
As shown in Figure 6, air blast flabellum 43 radially inner edge axially form stepped, its by the inlet air side radially inner edge 43c3, air side radially inner edge 43c4 constitute so that the radial length of air blast flabellum 43 is increased to root edge 43b by inlet air lateral margin 43a.Whereby, the same relatively radial length of weak point that forms of the inlet air lateral margin 43a of air blast flabellum 43, and the inlet air side of air blast flabellum 43 radially also can form buffer space 400 between inner edge 43c1 and wheel hub 41 end faces, with relative increase air inlet area, promote the air flow divert fluency, and reduces the air blast noise.
Embodiment two
As Fig. 7, shown in Figure 8, blower fan blade radical length of the present invention comprises wheel hub 41, at least one supporting element 42, several pieces air blast flabellums and at least one connecting ring 44,45 with outer circumferential face by the inlet air lateral margin to the impeller 4 of root edge amplification.
Blower fan blade radical length of the present invention can be in conjunction with motor (figure does not show) to the impeller 4 of root edge amplification by the inlet air lateral margin, and forms complete air blast heat-dissipating fan with shell block and cover plate.
Shell block is provided with room and side air-out mouth.
Cover plate is incorporated on the shell block, and is provided with wind inlet.
Supporting element 42 is the wavy rib by the outer circumferential face outward radial extension of wheel hub 41.
Several pieces air blast flabellums are divided into first and second group air blast flabellum 43,43 ' with different lateral margin shapes, and first and second group air blast flabellum 43,43 ' forms interleaved with suitable quantity ratio correspondence and arranges the preferable wheel hub 41 that is higher than of its axial height.
First group of air blast flabellum 43 comprise the root edge 43b of the inner bottom surface of the inlet air lateral margin 43a corresponding to the cover plate wind inlet, contiguous shell block room, corresponding to the radially inner edge and the radially outer edge 43d of wheel hub 41.
First group of air blast flabellum 43 radially inner edge axially forming different slope or curvature, its by the inlet air side radially inner edge 43c1, air side radially inner edge 43c2 constitute, thereby make air blast flabellum 43 by inlet air lateral margin 43a to root edge 43b amplification radial length.That is the radial length of the inlet air lateral margin 43a of air blast flabellum 43 has less than the radial length of root edge 43b relatively than short radial length, to reduce the air inlet action of disturbing wind inlet.Moreover the radially outer edge 43d of air blast flabellum 43 all is parallel to the rotational axis line of air blast flabellum 43, and is axially forming same radial length.
Second group of air blast flabellum 43 ' comprise the root edge 43b of the inner bottom surface of the inlet air lateral margin 43a corresponding to the cover plate wind inlet, contiguous shell block room, corresponding to the radially inner edge and the radially outer edge 43d of wheel hub 41.
Second group of air blast flabellum 43 ' radially inner edge 43 all is parallel to the rotational axis line of air blast flabellum 43 ', and axially forming same radial length.
Whereby, first and second group air blast flabellum 43, the 43 ' interference that can reduce equally to the wind inlet air inlet; And because of first and second group air blast flabellum 43,43 ' axial height are higher than wheel hub 41, so, radially can form buffer space 400 between the end face of inner edge 43c1,43c ' and wheel hub 41 in first and second group air blast flabellum 43,43 ' inlet air side, can increase the air inlet area relatively equally, and promote the air flow divert fluency, and reduce the air blast noise.
Embodiment three
As Fig. 9, shown in Figure 10, blower fan blade radical length of the present invention comprises wheel hub 51, ring flat-plate shape supporting element 52 and several pieces air blast flabellums 53 with outer circumferential face by the inlet air lateral margin to the impeller 5 of root edge amplification.
Blower fan blade radical length of the present invention can be in conjunction with motor (figure does not show) to the impeller 4 of root edge amplification by the inlet air lateral margin, and forms complete air blast heat-dissipating fan with shell block and cover plate.
Shell block is provided with room and side air-out mouth.
Cover plate is incorporated on the shell block, and is provided with wind inlet.
Radially inner edge 53c is axially forming different slope or curvature, thus make air blast flabellum 53 by inlet air lateral margin 53a to root edge 53b amplification radial length.That is the radial length of the inlet air lateral margin 53a of air blast flabellum 53 has less than the radial length of root edge 53b relatively than short radial length, with relative increase air inlet area.Moreover the radially outer edge 53d of air blast flabellum 53 all is parallel to the rotational axis line of air blast flabellum 53, and is axially forming same radial length.In addition, the preferable wheel hub 51 that is higher than of the axial height of air blast flabellum 53 so, can form buffer space 500 between the end face of the radially inner edge 53c of air blast flabellum 53 and wheel hub 51, move and promote the air flow divert fluency to reduce the air inlet of disturbing wind inlet, and reduce the air blast noise.
As mentioned above, only have limitation air inlet scope and easily comparing because of air-flow turns to shortcomings such as producing the air blast noise immediately with existing impeller, the present invention forms than minor axis to length inlet air lateral margin by flabellum, with relative increase air inlet area, increases air inflow; And, so, between the end face of the radially inner edge of air blast flabellum and wheel hub, can form buffer space because of the preferable wheel hub that is higher than of the axial height of air blast flabellum, to reduce the air inlet action of disturbing wind inlet, increase the air-out blast, and promote the air flow divert fluency, and reduce the air blast noise.
Claims (7)
1. a blower fan blade radical length is by the impeller of inlet air lateral margin to the root edge amplification, and it comprises wheel hub, at least one supporting element that is connected in the wheel hub outer circumferential face with outer circumferential face and several pieces air blast flabellums that connect and be supported in wheel hub by supporting element; The inner containing space that forms of wheel hub; The air blast flabellum is incorporated into wind lateral margin, root edge, corresponding to the radially inner edge and the radially outer edge of wheel hub; It is characterized in that the radially inner edge radial length to small part blower fan leaf is axially changing to form the blower fan blade radical length by the variation of inlet air lateral margin to the root edge amplification in described several pieces air blast flabellums, make radial length to the inlet air lateral margin of small part blower fan leaf less than the root edge radial length, and the radial length of inlet air lateral margin less than the root edge radial length to forming radially inner edge that interleaved arranges at the air blast flabellum that axially forms same radial length so that the suitable quantity ratio is corresponding between the small part blower fan leaf.
2. blower fan blade radical length according to claim 1 is characterized in that by the impeller of inlet air lateral margin to the root edge amplification inner edge forms axioversion, arc song or stepped to form the blower fan blade radical length by the variation of inlet air lateral margin to the root edge amplification to described radial length axially changing radially.
3. blower fan blade radical length according to claim 1 is characterized in that by the impeller of inlet air lateral margin to root edge amplification the axial height of described air blast flabellum is higher than wheel hub, to form buffer space between the end face of the radially inner edge of air blast flabellum and wheel hub.
4. blower fan blade radical length according to claim 1 is characterized in that by the impeller of inlet air lateral margin to the root edge amplification described supporting element is for connecting several ribs of supporting part air blast flabellum; Several pieces air blast flabellums are connected with so as to connecting the connecting ring of several pieces blower fan leaves.
5. blower fan blade radical length according to claim 4 is characterized in that by the impeller of inlet air lateral margin to the root edge amplification described connecting ring is connected in the inlet air lateral margin of several pieces air blast flabellums.
6. blower fan blade radical length according to claim 4 is characterized in that by the impeller of inlet air lateral margin to the root edge amplification described connecting ring is connected in the root edge of several pieces air blast flabellums.
7. blower fan blade radical length according to claim 1 is characterized in that by the impeller of inlet air lateral margin to the root edge amplification described supporting element is a ring flat-plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100697962A CN100383402C (en) | 2004-07-19 | 2004-07-19 | Blast fan impeller harving blade radical length increasing air from side edge to bottom edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100697962A CN100383402C (en) | 2004-07-19 | 2004-07-19 | Blast fan impeller harving blade radical length increasing air from side edge to bottom edge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1724875A CN1724875A (en) | 2006-01-25 |
| CN100383402C true CN100383402C (en) | 2008-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100697962A Expired - Fee Related CN100383402C (en) | 2004-07-19 | 2004-07-19 | Blast fan impeller harving blade radical length increasing air from side edge to bottom edge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100383402C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929974B (en) * | 2015-07-20 | 2017-10-03 | 李春萍 | A kind of perfusion type fan blade |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5013215A (en) * | 1990-01-25 | 1991-05-07 | Wetterau Incorporated | Blowers for freezer system and methods of installation thereof |
| US6042335A (en) * | 1998-05-04 | 2000-03-28 | Carrier Corporation | Centrifugal flow fan and fan/orifice assembly |
| CN1339658A (en) * | 2000-08-17 | 2002-03-13 | Lg电子株式会社 | Turbine fan for window air conditioner |
| CN1341813A (en) * | 2000-09-05 | 2002-03-27 | Lg电子株式会社 | Turbofan for air conditioner system |
| CN1401914A (en) * | 2001-08-28 | 2003-03-12 | Lg电子株式会社 | Turbofan |
| CN2549227Y (en) * | 2002-05-14 | 2003-05-07 | 李国良 | Blade base of fan |
| DE10258820A1 (en) * | 2002-12-17 | 2004-07-01 | Ingenieurbüro Müller GmbH | Method for plastics injection molding centrifugal fan wheel with consistent wall thickness has blades joined alternately at opposite ends |
-
2004
- 2004-07-19 CN CNB2004100697962A patent/CN100383402C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5013215A (en) * | 1990-01-25 | 1991-05-07 | Wetterau Incorporated | Blowers for freezer system and methods of installation thereof |
| US6042335A (en) * | 1998-05-04 | 2000-03-28 | Carrier Corporation | Centrifugal flow fan and fan/orifice assembly |
| CN1339658A (en) * | 2000-08-17 | 2002-03-13 | Lg电子株式会社 | Turbine fan for window air conditioner |
| CN1341813A (en) * | 2000-09-05 | 2002-03-27 | Lg电子株式会社 | Turbofan for air conditioner system |
| CN1401914A (en) * | 2001-08-28 | 2003-03-12 | Lg电子株式会社 | Turbofan |
| CN2549227Y (en) * | 2002-05-14 | 2003-05-07 | 李国良 | Blade base of fan |
| DE10258820A1 (en) * | 2002-12-17 | 2004-07-01 | Ingenieurbüro Müller GmbH | Method for plastics injection molding centrifugal fan wheel with consistent wall thickness has blades joined alternately at opposite ends |
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| Publication number | Publication date |
|---|---|
| CN1724875A (en) | 2006-01-25 |
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Address after: The new Taiwan China Ya Lu Kaohsiung City No. 30 Lane 296 Patentee after: Jianzhun Electric Motor Industry Co., Ltd. Address before: Kaohsiung City, Taiwan, China Patentee before: Jianzhun Electric Motor Industry Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 Termination date: 20190719 |